还有一个问题,这是最后一个了 They will finish the bridge next year.(用by the end of next year改写)

问题描述:

还有一个问题,这是最后一个了 They will finish the bridge next year.(用by the end of next year改写)
They______ ______ ______ the bridge by the end of next year

They will have finished the bridge by the end of next year.